Natural selection favors...

Which is an example of natural selection at work?

Galapagos Medium Ground Finches are from a single genetic ancestor but are found on different islands. What is the most likely explanation why these birds differ in appearance from island to island?

Which example does NOT describe changes due to selective breeding?

A farmer owns two chickens. He decides to breed the chickens so he will have more hens lay eggs. Chicken X lays twice as many eggs as chicken Y. The farmer decides to only breed chicken X. What term best describes this process?

A group of students learns that the traits of some organisms change over time because organisms better adapted to the environment tend to survive and produce more offspring. Which term best describes this process?

Which is the best example of natural selection?

Rough-skinned newts are highly poisonous organisms. The newt's toxin level is great enough to repel predators, such as snakes. Garter snakes have exhibited a resistance to the toxins, which allows them to prey upon the newts. What explains this?

A concept in scientific research states that changes in genetic traits may be passed from one generation to the next through natural selection. An example of how

Students studies skulls from different generations of the same species of birds. The students noticed that, in each generation, the bird beaks increased in length. What is the best explanation for this occurrence?

All natural predator of large and small newts are removed from an area. The scientists hypothesize that without natural predators, the small newts will survive at a higher rate. The population of small newts remains constant. Why?

Gregor Mendel studied the genetic characteristics of pea plants to find how certain traits were passed from generation to generation. He discovered that, over many generations, certain traits in common pea plants are visible in offspring through...

Darwin studied finches on the Galapagos Islands and noticed distinct finch beaks on the various islands due to the different food sources available. What would be the best way to make QUANTITATIVE observations about the differences of each finch?

Darwin studied finches on the Galapagos Islands and noticed distinct finch beaks on the various islands due to the different food sources available. From his studies, Darwin concluded...

When researching hitell other scientists ofs theory of natural selection, Charles Darwin did extensive studies on the Medium Ground Finch of the Galapagos Islands. In order to ensure that a hypothesis is actually a viable theory, a scientist must.

The deer mouse is a species found throughout North America. Most deer mice have dark-colored coats. The deer mice that live in Nebraska have developed light-colored coats. Which best explains this phenomenon?

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